摘要
以TiCl_4为钛源,通过水热法合成了具有光催化活性的TiO_2和Mn^(2+)掺杂的TiO_2。高压汞灯的照射下,测定了TiO_2和Mn^(2+)掺杂的TiO_2催化降解罗丹明B的反应动力学。结果显示催化反应符合一级反应动力学;一定质量范围内Mn^(2+)的掺杂可以提高TiO_2的催化活性,其中,0.5%Mn^(2+)掺杂的TiO_2显示出优良的催化性能。不同的TiO_2和Mn^(2+)掺杂的TiO_2形貌进行扫描电镜分析,结果显示样品均为结晶块状,且都达到微米级别。
TiO_2 and Mn2 ＋-doped TiO_2 which has photocatalytic activity was synthesized with Ti Cl4 as titanium source by using the hydrothermal method,and the kinetics for degradation Rhodamine B was studied with the light of high pressure mercury lamp. The result of the study showed that the degradation reaction fit with the first-order kinetics. A certain range of doped Mn^（2＋）can enhance the catalytic activity of TiO_2;and TiO_2 doped with 0.5% Mn^（2＋）was excellent in catalytic performance.Besides,morphology of different samples was characterized by scanning electron microscopy,indicating that all the samples were crystal of block shape and at the micron level.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2015年第12期228-231,共4页
Environmental Science & Technology
基金
四川省教育厅项目(13ZA0255)
四川省大学生创新性实验计划项目(121062635)
